Rolling-mill for seamless tubes.



L. VVOLFFGRAIVI. f

ROLLING MILL FOR SEAIVILESS TUBES.

APPLICATION FILED JULY 20.19175.

1I. @349245 Patented July 24E, 191711 2 SHEETS-SHEET I.

Wl T/VESSES:

L. WOLF-Femm.

ROLLING MILL FOR SEAIVILESS TUBES.

` APPLICATION FILED JULY 20, I9'I5. 30f% Patented July 24,1917.

2 SHEETS-SHEET 2.

LUDWIG- WOLFFGM, 0F BROOKLYN, NEW YORK.

ROLLING-MILL FOR SEAMLESS TUBES.

Application led July 20, 1915.

To all whom z' may concern:

Be it known that I, LUDWIG WoLFFGRAi r, a citizen of the German Empire, and a resident of New York, in the borough of Brooklyn, county 4of Kings, and State of New York, have invented certain new and useful Improvements in Rolling-Mills for Seamless Tubes, of which the following is a specification.

This invention relates to rolling mills for seamless tubes, and has for its object to provide an improved mill, by means of which the rollers may be changed to any position desired. More particularly my invention is shown in the accompanying drawings, and will be more fully described hereinafter and nally pointed out in the claiins.

In the accompanying drawing,

Figure 1 is a side view partly 1n section of my improved mill,

Fig. 2- is an end View thereof,

Fig. 3 is a plan view of part of the mill as shown in Fig. 1,

Fig. 4 shows the relative position of the rollers, and u v Fig. 5 shows the relative position of two rollers with the mandrel in position, and the mass or block passing between the rollers and over the mandrel to form the seamless tube.

Fig. 6 represents an elevation ofthe outer end of one of the cylindrical ways, showing the locking means for holding the roller carrier in adjusted position within said cylindrical way, parts being broken out.

Fig. 7 represents a diametrical section .of said cylindrical way on line 7:-7 of Fig. 6, showing a fragment of the adjustable roller carrier disposed therein.

Fig. 8 represents a vertical longitudinal section of a casing for this roller mill in which the several ways for the roller mill are angular in form and structurally separate one from the other.

Fig. 9 represents an end elevation of the right hand end of the casing shown in Fig. 8.

Similar reference numerals indicate corresponding parts throughout the several gures of the drawing.

Referring to the drawings, and more particularly to Fig. 1, a b ase 10 is provided vwhich supports tw'o horizontally and laterally extendin portionsor'casings 11 and 12, and an uprig t or vertically extending portion or casing 13. The casings 11 and 12 are disposed apart' from each other in rightline Specification of Letters Patent.

' in Figs. 3 and 5, and

Patented .niiy er, iai 7.. serial No. 40,328.

alinement on opposite sides of the roll pass and are open at their adjacent ends. The casing 13 is disposed at right angles to the axis of the casings 11 and 12. Within each of these portions or casings 11, 12 and 13, which act as guideways, drums 15, 16 and 17 are provided which are capable of being rotated within the portions 11, 12 and 13, and of being moved along the length of the same toward or from each other. Each of these drums 15, 16 and 17 constitute roller carriers, being provided at their forward ends with supporting members 18, which are provided with openings or bearings 19 for corresponding shafts 2O of rollers 21, 22 and 23. rlhe axes of the rollers 21 and 22 are at right angles to the common axis of the carriers 15 and 16 and oscillatable in parallel vertical planes. The axis of the Y roller 23 is at right angles. to the axis of its carrier and is oscillatable in a horizontal plane. These rollers are shaped as indicated have definite configurations and definite angles, as more fully described in av copending application Serial No. 37,609 filed by me July l, 1915. The mandrel 25 with the mandrel rod 26 is arranged in a suitable position in respect to the rollers 21 and l22, as shown in Fig. 5, and a mass orblock 27 passes through the rollers and over the mandrel 25 to form a seamless thin walled tube 28, as shown in Fig. 5.

l The heads 33 at the outer ends of the portions or cylinders 11, 12 and 13 are rovided' with central screw-threaded openings 33 and screwthreaded stems 31, 32 and 30 engage said openings. The stems 31 and 32 are provided outside said heads with actuating hand wheels 35 and 36 respectively and the stein 30 is provided with an actuating gear wheel 37. rllhe stems 31, 32 and 30 are provided at their inner ends withl enlargements 31, 32El and 30a which engage the outer ends of the drums 15, 16 and 17 in such manner that the drums must move longitudinally within their respective cylinders in unison with such movements of the screwthreaded stems, but the stems and drums are free to turn independently of each other. By rotating any of these wheels in either one or the other direction, the stems are rotated, and by means of the screw-threads the stems are moved in respect to the'heads so as to move the drums inwardly or outwardly. At the same time,

'the angular position of the'rollers "invention,

when it is desired, the drums may be rotated in their angular position so as to change by the drums. For this purpose, each drum is provided with projecting members 38 which move in guide grooves 39, clearly seen yin Figs. 2 and 3, and the object of these isto rotate the drums in a secure manner', and hold them in position and prevent them from Wabbling by a suitable locking device.. which is adjustable and shiftable on the heads. be employed for this purpose. l A convenient locking device is shown in Figs. 6 and 7.' rl`he head 40, which corresponds to either of the heads 33 of the other gures has the arc-shaped slots 39 disposed at diametrically opposite points through which the rods 313a of the drum project. rlhe head d@ is also provided on o posits sides of each of said slots 39 with 'ined studs di and d2 which are screwthreaded at their outer'endsy and provided with 'nuts 4:3 and 4d. Slidable locking plate j are each provided with a hole' through which the rod 38a projects and on opposite sides of said hole with concentric arc-shaped slots 52 and 53 which engage the lined studs il and 4:2. 'lihe nuts 43 and 44e are tightened to clainp the locking plates 50 against the head 33 when the drum is adjusted to the desired position and a loosening of these nuts permits the locking" plates to slide on said head as the drum is rotatively adjusted. ,'llhe portions 1l, 12 and 13 may be of one piece as shown in Fig. 1. The upper portion 13, requires for convenience sake, atrain of mechanism constituting the bevel gears 37 and 38", so as to make the operative Wheel' 3 4: convenient of operation.

Figs. 8 and 9 show the casings forming the ways for separate from one another and suitably joined together. rllhese figures also show the casings, forming ways for the roller carriers, in rectangular instead ofin cylindrical lforin. The rectangular casings l1, 12Q7 and 13a correspond to the cylindrical cas-n ings 1l, 12 and 13 ofthe other construction.

Any form of casings and carriers suitable the invention may be used. g

for carrying out l have shown various embodiments of my but it is .clear thatk changes may be made therein without departing from the spirit thereof as dened in the appended claims. y

Having thus described my invention, claim as new and desire to secure byfLetters Patent 1. .d rolling mill comprising 'two cylin-lk drical ways open at their inner ends and disposed 'in rightline alinement,l roller carriers. movable therein toward and from each other and provided with bearings at their adjacent ends, rollers journaled in said bearings and supported Any suitable locking` device .may

' inV said bearings and having drum l?, in the upper n the roller carriers structurally ressens having their ares at right angles to the axis of said carriers, the axes of said rollers being oppositely inclined in, parallel planes,

' means for adjusting said carriers toward or and from each other and providedwith bearings at their adjacent ends, rollers journaled their axes at right angles to the axis of said carriers, the axes of said rollers being oppositely inclined in parallel planes, means for. adjusting said carriers toward or from eachother to change the distance between said rollers, meansy for turning said carriers to shift said roll,- ers into diderent inclines in their parallel planes, a roller carrier movable in said right angled way and provided 7with bearings at its inner end, a roller` journaled yin said lastnamed bearings and having its axis at right an les to the axis of its carrier, means foi adjusting saidllast named carrier inward and outward 'within said third way, and means for turning said third carrier to shift yits roller with' relation. tothe other rollers.

n 3. A rollingmill comprising two ways disposed in rightline alinement, a third way, extending outward vat right angles to said ktwo ways at the inner ends thereof, roller y carriers movable in said alined ways toward and from each'otherand provided with bearings at their adjacentfends, rollers journaled in said bearings andhavingtheir axes at right angles to the axis of said carriers and ica f the axes of said rollers being oppositely inclined 1n parallel planes, means for adjust f ing said carriers toward or from each other to change the distance between said rollers 'means for turning said carriers to shift'sai l rollers into diderent'inclines rintheir parallel y p1anesa roller carrier movable in said.y right angled way and provided with bearings at its inner enda roller journaled in said last named bearings and having its axis atright angles. to the axis of its carrier, means for adjusting, said last namedV carrier inward and outward within said 'third way, means for turning said third carrier to 'shift its roller with relation to the othery rollers, and

' means for. locking said carriers to holdsaid rollers at their several adjusted positions. f n d. A rolling mill comprising two cylin= drical ways disposed in rightline alinement,

o en aty their inner ends and provided at t eir outer end s with heads 'having arc-4 shaped slots, cylindrical roller carriers turnable in said ways, movable therein toward rio ist v and from each other and lprovided at theirV le@ mesma adjaoent ends with bearings and at their outer ends with studs adapted to engage said slots, rollers journaled in said bearings and havin their axes at right angles to the axis of sai carriers, the axes of said rollers being o positely inclined in parallel planes, means or adjusting said carriers toward or from each other to change the distance between said rollers, and means for turning said carriers to shift said rollers into di'erent inolines in their parallel planes,

5. A rolling mill comprising two cylindrical ways dlsposed in rightline alinement, a third cylindrical way extending outward at right angles to said two cylindrical ways at the inner ends thereof, roller carriers movable in said alined ways toward and from each other and provided with bear ings at their adjacent ends, rollers journaled in said bearings and having their axes at right angles to the axis of said carriers, the axes of said rollers being oppositely inelined in parallel planes, means for adjusting said carriers toward or from each other to change the distance between said rollers, means for turning said carriers to shift said rollers into different inclines in their parallel planes, a cylindrical roller carrier movable in said right angled way and provided with bearings at its inner end, a roller journaled in said last named bearings and having its axis at right angles to the axis of its carrier, means for adjusting said last named carrier inward and outward within said third way, and means for turning said third carrier to shift its roller with relation to the other rollers.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

LUDWIG WOLFFGRAM.

Witnesses:

D. LEWIS MATrERN, Jos. lBIsBANo. 

